richterlich
judicial
Issued, decided, or ordered by a judge or a court. Refers to the activity or authority of the judiciary.
Für die Hausdurchsuchung ist ein richterlicher Beschluss erforderlich.
A judicial order is required for the house search.

judicial
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judicial
Issued, decided, or ordered by a judge or a court. Refers to the activity or authority of the judiciary.
Für die Hausdurchsuchung ist ein richterlicher Beschluss erforderlich.
A judicial order is required for the house search.

The adjective 'richterlich' (judicial) is derived directly from the noun 'der Richter' (the judge). The ending '-lich' means 'in the manner of a judge' or 'coming from a judge'.
Die Entscheidung wurde auf richterliche Anweisung hin getroffen.
The decision was made on judicial instruction.
This adjective is almost always used in combination with legal nouns. Typical collocations are 'richterlicher Beschluss' (judicial order), 'richterliche Anordnung' (judicial directive), and 'richterliche Genehmigung' (judicial approval).
Ohne richterliche Genehmigung darf die Polizei die Wohnung nicht betreten.
Without judicial approval, the police may not enter the apartment.
'Richterlich' (judicial) is a formal word and belongs to the technical language of the judiciary and administration. It is rarely used in everyday conversation.
Das Gericht prüft den Fall auf richterliches Ermessen.
The court examines the case at judicial discretion.
legal
'rechtlich' and 'richterlich' can both be connected with the justice system and the law. 'rechtlich' is general and describes something that has to do with law or laws. 'richterlich' is narrower: it comes from a judge or a court, for example an order or decision. Learners may confuse the words because courts are part of the legal system. If you are speaking generally about laws, 'rechtlich' fits. If a decision or permission comes directly from a court, 'richterlich' is more precise.

Die Durchsuchung durfte nur mit einer richterlichen Anordnung stattfinden.
The search could only take place with a judicial order.
Die Firma holt sich rechtlichen Rat, bevor sie den Vertrag ändert.
The company gets legal advice before changing the contract.